Fixes a bug introduced in 794e079437
whereby the grep patterns used in this test would also match
/gnu/store/…-rust-libgit2-sys-0.17.0+1.8.1.drv, thus getting 5 matches
instead of 4.
* tests/guix-build.sh: Refine grep patterns for ‘guix build -P1’ test.
Reported-by: Janneke Nieuwenhuizen <janneke@gnu.org>
Change-Id: Iae35e6ee44b8eca0ef66c1d8ab7f9ff65a59d8d0